Home / 161,521.20-242,132.76-86,693.76

Finding the Fourth Proportional to 161,521.20, 242,132.76 and 86,693.76

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Solution

The fourth proportional to 161,521.20, 242,132.76 and 86,693.76 is: 129,960.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,521.20 : 242,132.76 = 86,693.76 : x
  2. Step 2: Convert to fraction form
    161,521.20/242,132.76 = 86,693.76/x
  3. Step 3: Cross multiply
    161,521.20x = 242,132.76 × 86,693.76
  4. Step 4: Simplify right side
    161,521.20x = 20,991,399,383.58
  5. Step 5: Solve for x
    x = 20,991,399,383.58/161,521.20
  6. Step 6: Final answer
    x = 129,960.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.